div.container {
    text-align: center;
    margin-bottom: 2em;
}

div#container {
    margin: 0 auto;
    height: 20em;
    min-width: 20em;
    max-width: 30em;
}

div.pg-footer {
    text-align: center;
    background-color: #F8F8F8;
}